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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e68711863bc10d7cb16b02c86a576f45167a004dfa60460df0bd0b647547b380' 
  AND token = 'cEHYrKYXkn1QgYpls21fVfq3wIKKOdMJx+A/epU5KDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}